package com.shuyan.base.algorithm;

import java.util.ArrayList;
import java.util.List;

public class exercise02 {
    public static void main(String[] args) {
        int i=0;
        i=++i;
        //++i;
        System.out.println(i);
        List<String> list=new ArrayList<>();
        list.add(null);
        System.out.println(list.size());
    }
}
